<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>title</title>
    <style>
        /* .one {
            width: 500px;
            height: 250px;
            border: 1px solid blue;
            border-color: aqua;
            box-sizing: border-box;
            padding: 20px 20px 30px 40px;
            margin: auto;
            text-align: center;
        } */
        div {
            width: 100%;
            height: 150px;
            background-color: wheat;
            display: flex;
            justify-content: flex-end;
        }
        div>span{
            background-color: aquamarine;
            width: 100px;
        }
    </style>
</head>
<body>
    <!-- <div class="one">正文正文正文正文正文正文正文正文正文正文正文正文正文1111111111111111111111111111</div> -->
    <div class="tow">
        <span>1</span>
        <span>2</span>
        <span>3</span>
    </div>
</body>
</html>